In default.conf I created a upstream backed {} section. For some servers I have used a weight=3. For these same servers, can I configure a max_fails= or fail_timeout= setting? Whenever I try both weight=3 and a max_fails or fail_timemout separate only by a space after the number "3", the Docker container will not start again. Is there a way to reconcile this and use a weight setting with a max_fails or fail_timeout setting too?